thought it was worth mentioning that halu has a particular synergy with matsuri's kit. aside from easier exp gain, halu makes enemies tankier and faster allowing god skill to proc much more easily especially when you have too many weapons
I don't think I would've figured out Matsuri's intended gameplay without this video, so thanks! (also note for everyone coming from 0.6+: beetle is so good with her kit like seriously holy shit)
For an updated build, the reworked PPP feels very good with Matsuri, a combo with it, bandage and the elite cooking super colab will give you a good buff. Paired with the armor and the plushie you can very easily dive into groups, kill everything and heal back up to full over and over.
Matsuri is the most difficult for me to run her with only Primary Weapon, sure she can deal alot of damage, but her attack are too slow, its still fine on early stage but on Stage 2 Hard I have to abandon Halu and some damage modify Item and pick those that help me to survive like the feather, body pillow .....
For the next update probably Iofi, Anya and Kaela, since their gameplay looks interesting the most for me. And the members I am waiting the most for future updates are Coco, Pekora, Aloe and Fuwamoco.